mirror of https://github.com/google/oss-fuzz.git
80 lines
2.2 KiB
Python
80 lines
2.2 KiB
Python
|
#!/usr/bin/python3
|
||
|
|
# Copyright 2022 Google LLC
|
||
|
|
#
|
||
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
# you may not use this file except in compliance with the License.
|
||
|
|
# You may obtain a copy of the License at
|
||
|
|
#
|
||
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
#
|
||
|
|
# Unless required by applicable law or agreed to in writing, software
|
||
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
# See the License for the specific language governing permissions and
|
||
|
|
# limitations under the License.
|
||
|
|
"""Fuzz grpc server using the Greeter example"""
|
||
|
|
|
||
|
|
import sys
|
||
|
|
import time
|
||
|
|
import grpc
|
||
|
|
import socket
|
||
|
|
import atheris
|
||
|
|
import threading
|
||
|
|
from concurrent.futures import ThreadPoolExecutor
|
||
|
|
from google.protobuf.internal import builder as _builder
|
||
|
|
|
||
|
|
# Extract path of fuzzer so we can include protobuf modules
|
||
|
|
if getattr(sys, 'frozen', False):
|
||
|
|
app_path = os.path.dirname(sys.executable)
|
||
|
|
elif __file__:
|
||
|
|
app_path = os.path.dirname(__file__)
|
||
|
|
else:
|
||
|
|
raise Exception("Could not extract path needed to import loop.py")
|
||
|
|
sys.path.append(app_path)
|
||
|
|
|
||
|
|
import helloworld_pb2
|
||
|
|
import helloworld_pb2_grpc
|
||
|
|
|
||
|
|
|
||
|
|
# Simple server
|
||
|
|
class FuzzGreeter(helloworld_pb2_grpc.GreeterServicer):
|
||
|
|
def SayHello(self, request, context):
|
||
|
|
print("In server")
|
||
|
|
return helloworld_pb2.HelloReply(message='Hello from fuzz server, %s!' % request.name)
|
||
|
|
|
||
|
|
|
||
|
|
def serve() -> None:
|
||
|
|
"""Starts fuzz server"""
|
||
|
|
server = grpc.server(ThreadPoolExecutor(max_workers=1))
|
||
|
|
helloworld_pb2_grpc.add_GreeterServicer_to_server(FuzzGreeter(), server)
|
||
|
|
server.add_insecure_port('[::]:50051')
|
||
|
|
server.start()
|
||
|
|
server.wait_for_termination()
|
||
|
|
return
|
||
|
|
|
||
|
|
|
||
|
|
def TestInput(input_bytes):
|
||
|
|
"""Send fuzzing input to the server"""
|
||
|
|
time.sleep(0.02)
|
||
|
|
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
|
||
|
|
s.connect(("localhost", 50051))
|
||
|
|
s.sendall(input_bytes)
|
||
|
|
data = s.recv(1024)
|
||
|
|
return
|
||
|
|
|
||
|
|
|
||
|
|
def main():
|
||
|
|
# Launch a grpc server
|
||
|
|
_thread = threading.Thread(target=serve)
|
||
|
|
_thread.start()
|
||
|
|
time.sleep(0.2)
|
||
|
|
|
||
|
|
# Start fuzzing
|
||
|
|
atheris.instrument_all()
|
||
|
|
atheris.Setup(sys.argv, TestInput, enable_python_coverage=True)
|
||
|
|
atheris.Fuzz()
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
main()
|